Banach空间中渐近拟非扩张型映象不动点的具误差的Ishikawa迭代逼近

设E是实的一致凸Banach空间，D是E的非空有界闭凸集．Γ：D-D是一半紧的一致L-Lipschitzian的渐近拟非扩张型映象，{Xn}是具误差的Ishikawa迭代序列,在最近有关文献定理中的条件“对任意子列{xni}包含{xn}，当‖Txni^ni-xni‖→0时就有‖Txni-xni‖→0”的情况下，证明了{xn}强收敛到T的某一不动点，所以定理推广和改进了原有的有关结果。     

非Lipschitz渐近伪压缩映象不动点的迭代逼近

在去掉{xn}有界的条件下,从而没有使用{Tnxn}和{Tnyn-yn}的有界性条件,在实Banach空间中建立了非一致Lipschitz的渐近伪压缩映象不动点的更一般的具混合误差的修改的Ishikawa迭代序列的强收敛定理,从而改进和推广了已有的相关结果.     

Banach空间中渐近伪压缩映象不动点在具误差的修正的Ishikawa迭代逼近问题

Ofoedu研究了Banach空间中渐近伪压缩映象Mann迭代逼近问题.以此为基础,在实Banach空间中研究了具误差的修正的Ishikawa迭代点列逼近一致Lipschitz的渐近伪压缩映象不动点的强收敛问题,推广了Ofoedu研究的结果.     

关于修正的Ishikawa迭代序列的稳定性和收敛性

关于严格渐近伪压缩映象和渐近伪压缩映象具平均误差的修正的Ishikawa和修正的Mann迭代序列的收敛性和稳定性之间的等价性问题的研究,一般都是在D有界或在序列{xn}与{Tnxn}有界的条件下进行研究的。而D有界或{xn}与{Tnxn}有界性条件,在一定程度上限制了某些研究成果的使用。笔者的目的是在取消{xn}与{Tnxn}有界的条件下,并用更弱条件γn→0（n→∞）取代γn=o（αn）,使用新的分析技巧,在实Banach空间中建立了依中间意义渐近非扩张的严格渐近伪压缩映象和渐近伪压缩映象具平均误差的修正的Mann和Ishikawa迭代序列收敛性和稳定性之间的等价性的充分必要条件。由于在去掉{xn}与{Tnxn}有界性的条件时,并没有增加其他条件,因此笔者的结果,本质上改进和推广了有关文献中的相应结果。     

一类新的几乎渐近非扩张型映象不动点的三步迭代逼近问题

在Banach空间中引入一类新的p-几乎渐近非扩张型映象，并得到了此类映象的修正的具误差的三步迭代序列的收敛定理.所得结果推广和发展了许多相关的结果.     

Banach空间中Lipschitz严格伪压缩映象的带误差的Ishikawa型迭代逼近

引入和研究了Banach空间中Lipschitz严格伪压缩映象的带误差的Ishikawa速代逼近问题，所得结果改进和推广了这一领域的相关结果．     

关于Banach空间中Lipschitz强伪压缩映象不动点的带误差的Ishikawa型迭代逼近问题

设X是实Banach空间E的闭子空间,T:X→X是Lipschitz强伪压缩映象,x*为T的不动点.在关于{αn},{βn}为更广的条件下证明了带误差的Ishikawa型迭代序列强收敛于x*.并证明了当T:E→E是Lipschitz强增生算子时,带误差的Ishikawa型迭代序列强收敛到方程Tx=f的唯一解.文章结果推广和发展了文[1]的相应结果.     

Lipschitz φ-半压缩映象不动点的迭代逼近

使用分析的技巧，在实Banach空间中研究φ-半压缩映象具有Lipschitz不动点的Ishikawa和Mann迭代的逼近问题，将Lipschitz强伪压缩映象不动点Mann迭代和Ishikawa迭代的相关结果，扩展到了φ-半压缩映象类，并提供了更为一般的收敛率的估计．     

关于Lipschitz严格伪压缩映象的带误差的Ishikawa型迭代程序

设K是任意实Banach空间X中的闭凸子集,T ∶ K→K是Lipschitz严格伪压缩映象,在没有假设∑∞n=0αnβn＜∞之下,本文证明了由xn+1=(1-αn) xn+αnTyn+un与yn＝(1-βn) xn+βnTxn+vn,n∈N,生成的带误差的Ishikawa迭代序列强收敛到T的唯一不动点,并给出了更为一般的收敛率估计:若un=vn=0,n∈N,则有‖xn+1-x*‖≤(1-γn) ‖xn-x*‖≤…≤∏nj=0(1-γj) ‖x0-x*‖,其中{γn}是(0,1)中的序列,满足γn≥11+kmin(ε,η-ε) αn.所得结果改进和推广了最新的一些结果.     

渐近伪压缩映象不动点的Mann迭代逼近问题

在研究E.U.Ofoedu研究的结果下: Banach空间中渐近伪压缩映象Mann迭代逼近问题[1],在实Banach空间中研究了具误差的修正的Mann迭代点列来逼近一致Lipschitz的渐近伪压缩映象不动点的强收敛问题,推广了E.U.Ofoedu研究的结果.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.